The ford of the hurdles was at what's now Church Street Bridge, which was on one of the five roads to Tara. That particular road came up through Bohernabreena (Bóthar na Brianaigh - the road of the O'Briens) and crossed the river - then wide and marshy - to go on to Stoneybatter (stony bóthar - "th" was then pronounced "th" rather than "h") and up to Tara.

And Blaw Clee-a, or Bollya Aw Clee-a, though the first is how most westerners say it.